115981825 has 12 divisors (see below), whose sum is σ = 147326508. Its totient is φ = 90521600.

The previous prime is 115981823. The next prime is 115981841. The reversal of 115981825 is 528189511.

It can be written as a sum of positive squares in 6 ways, for example, as 31764496 + 84217329 = 5636^2 + 9177^2 .

It is not a de Polignac number, because 115981825 - 2¹ = 115981823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115981823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55552 + ... + 57601.

It is an arithmetic number, because the mean of its divisors is an integer number (12277209).

Almost surely, 2^115981825 is an apocalyptic number.

It is an amenable number.

115981825 is a deficient number, since it is larger than the sum of its proper divisors (31344683).

115981825 is a wasteful number, since it uses less digits than its factorization.

115981825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113204 (or 113199 counting only the distinct ones).

The product of its digits is 28800, while the sum is 40.

The square root of 115981825 is about 10769.4858280235. The cubic root of 115981825 is about 487.6744236689.

The spelling of 115981825 in words is "one hundred fifteen million, nine hundred eighty-one thousand, eight hundred twenty-five".